Yes. When filling out the spreadsheet, enter your normal address, but add something unique to it with a plus sign. So if your email is email@example.com and you are grading Lisa Smith's exam, enter the email as firstname.lastname@example.org. Each student needs to have a unique email (which this is), but ALL notification emails that would have been sent to the student will now be sent to the email@example.com domain (as long as the service is using a Google server).
This is done by default in Excel, but there are two ways around it. If you are only entering a few results, you can put an apostrophe before the fraction, like this '2/3. The apostrophe will disappear and the value will be entered as just 2/3.
Alternatively, if you are processing many diagnostics, you can format all cells in the document as "Text," instead of "General." This will force 2/3 into a fraction instead of date, with no apostrophe needed.
Most likely this is because there was an error in your original file, and you are trying to upload it after the edits have been made. The file upload system is very finicky at the moment, and will always revert back to the first version of a document that is uploaded.
If you make any changes to a document before it's uploaded again, you will have to save that file as a different name. We recommend saving files with _1, then _2, etc. if need be. This will be fixed on release.
For answer responses, not at the moment, so be really careful.
If you spelled a student's name incorrectly, contact us and we will change it for you.